Nanosized TiO2 Photocatalyst Powder via Sol-Gel Method: Effect of Hydrolysis Degree on Powder Properties
Nanosized TiO2 powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), and 4 (Powder D) to evaluate effect of hydrolysis degree. TG/DTA curves showed that amorphous phase tur...
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| Format: | Article |
| Language: | English |
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Wiley
2009-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2009/962783 |
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| author | Nor Hafizah Iis Sopyan |
| author_facet | Nor Hafizah Iis Sopyan |
| author_sort | Nor Hafizah |
| collection | DOAJ |
| description | Nanosized TiO2 powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), and 4 (Powder D) to evaluate effect of hydrolysis degree. TG/DTA curves showed that amorphous phase turned to anatase crystal structure at ca. 415, 337, 310, and 339∘C for Powders A, B, C, and D, respectively. XRD analysis showed that all the synthesized TiO2 powders were 100% in anatase form with Powders B and C showing considerably higher crystallinities. The powders obtained at lower water to TPT mol ratios were spherical in shape and they became bar-like shapes higher mol ratios. The lower hydrolysis degree led to higher surface area of the Powder A (24.8 m2/g) compared to Powder B (14.6 m2/g). From phenol photocatalytic measurement, Powder B was the most efficient attributed to its higher crystallinity. |
| format | Article |
| id | doaj-art-bf626ba7186d4e0aadf66c81b10125fd |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-bf626ba7186d4e0aadf66c81b10125fd2025-02-03T05:46:10ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2009-01-01200910.1155/2009/962783962783Nanosized TiO2 Photocatalyst Powder via Sol-Gel Method: Effect of Hydrolysis Degree on Powder PropertiesNor Hafizah0Iis Sopyan1Department of Manufacturing and Materials Engineering, International Islamic University Malaysia (IIUM), P.O. Box 10, Kuala Lumpur 50728, MalaysiaDepartment of Manufacturing and Materials Engineering, International Islamic University Malaysia (IIUM), P.O. Box 10, Kuala Lumpur 50728, MalaysiaNanosized TiO2 powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), and 4 (Powder D) to evaluate effect of hydrolysis degree. TG/DTA curves showed that amorphous phase turned to anatase crystal structure at ca. 415, 337, 310, and 339∘C for Powders A, B, C, and D, respectively. XRD analysis showed that all the synthesized TiO2 powders were 100% in anatase form with Powders B and C showing considerably higher crystallinities. The powders obtained at lower water to TPT mol ratios were spherical in shape and they became bar-like shapes higher mol ratios. The lower hydrolysis degree led to higher surface area of the Powder A (24.8 m2/g) compared to Powder B (14.6 m2/g). From phenol photocatalytic measurement, Powder B was the most efficient attributed to its higher crystallinity.http://dx.doi.org/10.1155/2009/962783 |
| spellingShingle | Nor Hafizah Iis Sopyan Nanosized TiO2 Photocatalyst Powder via Sol-Gel Method: Effect of Hydrolysis Degree on Powder Properties International Journal of Photoenergy |
| title | Nanosized TiO2 Photocatalyst Powder via Sol-Gel Method: Effect of Hydrolysis Degree on Powder Properties |
| title_full | Nanosized TiO2 Photocatalyst Powder via Sol-Gel Method: Effect of Hydrolysis Degree on Powder Properties |
| title_fullStr | Nanosized TiO2 Photocatalyst Powder via Sol-Gel Method: Effect of Hydrolysis Degree on Powder Properties |
| title_full_unstemmed | Nanosized TiO2 Photocatalyst Powder via Sol-Gel Method: Effect of Hydrolysis Degree on Powder Properties |
| title_short | Nanosized TiO2 Photocatalyst Powder via Sol-Gel Method: Effect of Hydrolysis Degree on Powder Properties |
| title_sort | nanosized tio2 photocatalyst powder via sol gel method effect of hydrolysis degree on powder properties |
| url | http://dx.doi.org/10.1155/2009/962783 |
| work_keys_str_mv | AT norhafizah nanosizedtio2photocatalystpowderviasolgelmethodeffectofhydrolysisdegreeonpowderproperties AT iissopyan nanosizedtio2photocatalystpowderviasolgelmethodeffectofhydrolysisdegreeonpowderproperties |